See also:SYSTEM from the posterior
See also:primary divisions of the
See also:spinal nerves (see NERVE, SPINAL) . On the anterior
See also:part of the thoracic region the
See also:pectoralis major runs from the clavicle, sternum and ribs, to the humerus (fig . 6) ; deep to this is the pectoralis minor, passing from the upper ribs to From A . M . Paterson,
See also:Cunningham's Text
See also:Book of Anatomy .
See also:process of the
See also:atlas . These muscles move the
See also:head on the atlas forming the semispinalis and multifidus spine muscles . The and the atlas on the
See also:axis . They are supplied by the posterior branch latissimus dorsi and rhomboids are supplied by branches of the of the first cervical nerve. brachial plexus of nerves, while the deeper muscles get their nerves MUSCLES OF THE TRUNK.—The trapezius has already been de- scribed as a superficial muscle of the upper part of the back; in the loin region the latissimus dorsi (fig . 5) is the superficial muscle, its origin being from the
See also:lower thoracic .spines, lower ribs and lumbar fascia, and it is inserted into the upper part of the
See also:bone or humerus . When the trapezius is cut, the rhomboid muscles (major and minor) passing from the upper thoracic spines to the vertebral border of the scapula are seen, and deep to these is the serratus posticus
See also:superior passing from nearly the same spines to the upper ribs . On reflecting the latissimus dorsi the serratus posticus inferior is seen
See also:running from the lower thoracic spines to the lower ribs .
When these muscles are removed the
See also:great mass of the erector spinae is exposed,
See also:familiar to every one as the upper cut of the sirloin or ribs of
See also:beef ; it runs all the way up the dorsal side of the vertebral
See also:column from the pelvis to the occiput, the complexus already mentioned being its extension to the head . It i3 longitudinally segmented into many different bundles to which
See also:special names are given, and it is attached to the various vertebrae and ribs as it goes up, thus straightening the spinal column . Deep to the erector spinae are found shorter bundles passing from one vertebra to another and the coracoid process . The serratus ma gnus is a large muscle rising by serrations from the upper eight ribs, and running back to the vertebral border of the scapula, which it draws forward as in the fencer's
See also:lunge . Between the ribs are the
See also:external and
See also:internal inter-costal muscles; the former beginning at the tubercle and ending at the junctions of the ribs with their cartilages, while the latter only begin at the
See also:angle of the ribs but are prolonged on to the sternum, so that an interchondral as well as an intercostal part of each muscle is recognized . The
See also:fibres of the external intercostals run downward and forward, those of the internal downward and backward (see RESPIRATION) . The abdominal walls are formed of three sheets of muscle, of which the most superficial or external oblique (fig . 6) is attached to the
See also:outer surfaces of the lower ribs; its fibres run downward and forward to the pelvis and
See also:line of the
See also:abdomen, the
See also:middle one or internal oblique is on the same
See also:plane as the ribs, and its fibres run downward and backward, while the transversaiis is attached to the deep surfaces of the ribs, and its fibres run
See also:tally forward . Below, all these muscles are attached to the crest of the ilium and to Poupart's ligament, which is really the lower
See also:free edge of the external oblique, while, behind, the two deeper ones, at all events, blend with the fascia lumborum . As they approach the mid-ventral line they become aponeurotic and
See also:form the sheath of the rectus . The rectus abdominis (fig . 6) is a
See also:flat muscular
See also:hand which runs up on each side of the linea
See also:alba or mid-ventral line of the abdomen from the pubis to the ribs and sternum .
This muscle has certain tendinous intersections or lineae transversae, the positions rotating muscles pass from the scapula to the upper end of the humerus; these are the subscapuloris passing in front of the
See also:shoulder joint, the supraspinatus above the joint, and the infraspinatus and teres minor behind . The teres major (fig . 5) comes from near the lower angle of the scapula, and is inserted with the latissimus dorsi into the front of the. surgical
See also:neck of the humerus . The coracobrachialis (fig . 7) passes from the coracoid process to the middle of the humerus in front of the shoulder joint, while the brachialis anticus passes in front of the
See also:elbow from the humerus to the coronoid process of the ulna .
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